Double Decker is quite a funny concept, did they start out trying to market to the British market?
I'm not sure these would go down very well over here.
They are not the tasty prawn crackers you would hope them to be like the ones you get from your local chinese.
These ones fit with the Asian obsession with making crisps taste like fish. Their palettes must be used to this and have accepted these as a good flavour. I personally cannot get around the stench and flavour of fish crisps. It just does not work.
Don't get me wrong, they don't have the power stench of these. But they're still not good.